To provide a girl for each is to coddle! (6)
I believe the answer is:
pamper
'is to coddle' is the definition.
(I've seen this in another clue)
'to provide a girl for each' is the wordplay.
I cannot really see how this works, but
'a' could be 'per' (eg 'one a day' means 'one per day') and 'per' is located in the answer.
'girl' could be 'pam' (short for Pamela) and 'pam' is found in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for pamper that I've seen before include "baby" , "Treat with excessive indulgence" , "Treat with over-indulgence" , "Mollycoddle" , "Overindulge (someone)" .)